gel pen

I have a large bucket of gel pens at home. Some are good and some are not. They come in all shapes and sizes, tall, short, fat and thin. But except for a few special ones, the refills are all surprisingly standard. They are all universal refills. There is also a box of replacement pens for the same. The core and size are exactly the same, so it is very necessary to design a pen yourself.

You can choose the thickness and shape by yourself, and you can also print it in the color you like. The most important thing is because there is a 3D printer. When you have free time, you can run it and print the pen non-stop. Load all the refills into the pen.

In order to facilitate printing, it is designed in two halves, so it is faster to print when laid flat.

After printing, sandwich the pen core between the two pieces, and then use a triangle to cover it. It can not only help hold the pen, but also fix the pen case. Finally, put the pen cover on. Now it is very strong and easy to use.